Universal rolling mill

ABSTRACT

A PASS LINE ADJUSTMENT FOR THE ROLLS OF A UNIVERSAL ROLLING MILL RELATIVE TO AN ASSOCIATED ROLLER TABLE. ADJUSTMENT OF THE MILL PASS LINE IS ACCOMPLISHED BY SHIMS, THREADED SPINDLES, WEDGES, OR PISTON CYLINDER ASSEMBLIES ARRANGED BETWEEN A CASSETTE FRAME CARRYING BOTH PAIRS OF HORIZONTAL AND VERTICAL ROLLS AND A ROLL CHANGING SLED SLIDABLY RECEIVED INTO THE MILL HOUSING.

Feb. 2, 1971 K. a. ILLERT ETAL 3,559,440

UNIVERSAL ROLLING MILL Filed July 11, 1968 4 Shets-Sheet 1 FIG? INVENTOR KARL G. ILLERT TAKAMITSU ANDO ITSURO MIIDA BY ATTORNEY UNIVERSAL ROLLING MILL Filed July 11, 1968 4 Sheets-Sheet z INVENTOR KARL G. ILLERT TAKAMITSU ANDO ITSURO MIIDA a d m ATTORNEY Feb. 2, 1971 El AL UNIVERSAL ROLLING MILL INVENT OR KARL G. ILLERT TAKAMITSU ANDO ITSURO MIIDA' BY ATTORNEY Feb. 2, I971 ETAL I 3,559,440

UNIVERSAL ROLLING MILL Filed July 11, 1968 4 Sheets-Sheet 4 Fig.6

ITSURO MI IDA ATTORNEY United States Patent-O Claims 5 Claims ABSTRACT OF THE DISCLOSURE A-pass line adjustment for the rolls of a universal roll ing mill relative to an associated roller table. Adjustment of ,themill pass line is accomplished by shims, threaded spindles, wedges; or piston cylinder assemblies-arranged} be t-ween acassette frame carrying both pairs of horizontal and vertical rolls and a roll changing sled slidablyrecelved into the mill'housing. s

BACKGROUND OF THEIINVENTIONQ f When rolling-beamsand other structural sections in.

3,559,440 P'atented Feb. 2, 1971 Fee whereas, in prior art universal mills, only the horizontal rolls were provided with rise and fall adjustments.

A further aspect of the present invention is to provide rigid shims inserted between the supporting frame and carriage to vary the height of the supporting frame. The shims are constructed and arranged to be inserted and removed when the carriage mounting the supporting frame is removed from the roll housings. This method of adju'sting the height of the supporting frame and, thus, of the vertical rolls affords an extremely simple means of setting the pass line elevation.

' In another aspect of the present invention means such as threaded spindles, adjusting wedges, hydraulic piston cylinder assemblies or similar means are operatively arranged between the carriage and the supporting frame and are employed to adjust the height of the supporting frame mounted on the carriage.

BRIEF DESCRIPTION OF THE DRAWINGS These features, as well as others, will become more apparent when the following description is read in light of universalrolling mills, so-called lifting or tilting tables I are usually employed to convey the stock traveling on the approach roller table into the rolling mill passesi'ljifting tables are essential because, on the one hand, the level of the transporting surface of the approach table is fixed and, on the otherhand, the height of the pass line will be determined and fixedjn relation to the surfaceofthe rollertablebythe largest structural shape to Abe rolled. When narrow orsmaller. sections are to be rolled inrthe mi i 11 1 .5. ne essary to b dg the ifl nce in. the height of the roller table surface and the pass line by means of lifting talIIS lO ensure that .the sections. enter the universal mill at theproper roll pass elevation,

Through the use of lifting tables, the sectioh'tohe rolled is advanced into the mill essentially at an angle to the pass line. As a result, the leading and trailing ends of the rolled section are off-size and must be cut off, which in practice amounts to a considerable Waste of material. Experience has shown that even if lifting tables are ten meters long, the afore-stated disadvantage cannot be obviated. In fact, about a meter of each length has to be sacrificed to remove the off-size ends in order to ensure that the finished beams or sections are of correct dimensions over their full length.

The object of the present invention is to eliminate the aforesaid drawbacks when using lifting tables for rolling beams and other structural sections with universal mills. A universal mill is thus provided that enables the oncoming stock to be conveyed from the approach table into the mill pass without the need for a lifting table.

SUMMARY OF THE INVENTION The present invention is particularly useful in a universal rolling mill having a supporting frame (cassette) carried and retained in the windows of the roll housings. The frame receives betweenits vertical walls both the vertical rolls and, in the same plane, the horizontal rolls complete with chocks. The solution taught by the invention is substantially to mount the supporting frame or cassette on a traversable carriage that is vertically adjustable in relation to the housing windows.

A universal mill embodying the features of this invention can be adjusted to height, by simple means, so that the beams or sections are transferred directly from the approach table at accurate right angles into the roll gap;

the accompanying drawings of which:

a ,FIG. 1 illustrates the basic principles of the present invention showing, in elevation, a universal mill with roller tables for rolling broad beams;

"FIG. 2 illustrates the same universal mill shown in FIG. lvexcept arranged for rolling narrow beams;

- FIG. 3 is a detailed view of a universal mill, viewed in the direction of rolling, illustrating the supporting frame mounting the horizontal and vertical rolls removed from the mill housings;

.- .FIG. 4 is an elevational view,

FIGfi-illustrates a second embodiment of support frame adjusting means;

,FIG. 6 illustrates a third embodiment of means for adjusting the height of the supporting frame; and

FIG. 7 illustrates a fourth embodiment of means for adjusting the height of the supporting frame.

With reference, to FIGS. 1 and .2, 'there is shown a universal mill 3 having two horizontal rolls 1 and two vertical rolls 2 arranged between approach and delivery tables 4 employed to convey the beams to be rolled to and from the universal mill 3.

As will be apparent from FIGS. 1 and 2., the height of the roll pass x-x of the universal mill 3 does not coincide with the height of the conveying surface y-y of the roller tables 4.

According to this invention, beams of various dimensions are conveyed by the approach table 4 accurately on the pass line x-x into the universal mill 3 by constructing the mill 3 to permit the elevation of the pass line to be varied in relation to the level of the conveying surface yy of the approach table 4. As shown in FIG. 1, the elevational change for the beam 5 has a dimension of a1 and, in FIG. 2, the elevational change for the beam 5 has a dimension of a2.

FIGURES 3 and 4 illustrate in greater detail the universal mill 3' which includes a supporting frams 8 mounted on a carriage 9 that is traversable into the windows 6 of the two uprights 7 constituting the mill housing. The sup porting frame 8 (also referred to as a cassette) accommodates the two-high horizontal rolls 1 with their chocks and, at the side thereof but located in the same plane, the vertical rolls 2 with their chocks. When the rolling schedule for the mill is changed, all that has to be done is to w thdraw the supporting frame 8 (cassette) from the windows 6 of the housing 7 by moving it sideways, and a previously prepared second supporting frame, set up for the next product to be rolled, is quickly traversed on the carriage 9 into the housing windows 6.

The supporting frame 8 is adjustably mounted on the carriage 9 to enable the pass line xx of the universal mill 3 to be brought into a proper relation with the level of the conveying surface yy of the approach table 4 so that the oncoming beam or section enters the universal mill 3 in a straight line.

Simple means are provided by this invention for adjusting the height of the pass line xx of the universal mill 3 in relation to the conveying surface yy of the roller tables 4. According to one embodiment, this height adjustment is effected by the use of shims 10 inserted between the carriage 9 and supporting frame 8. The number and thickness of the shims 10 inserted will depend on the width of section to be rolled by the set of rolls installed in the supporting frame 8. The shims 10 are placed on the carriage 9 before the supporting frame 8 is lowered thereon. I

Instead of shims 10, other means can be installed between the carriage 9 and supporting frame 8. FIGURE illustrates a second embodiment of the present invention wherein in place of shims 10, threaded spindles 11 are arranged between the support frame 8 and carriage 9.

FIGURE 6 illustrates a further embodiment of the 1 assemblies 13 arranged between the support frame 8 and the carriage 9.

Compared with shims 10, the above additional embodiments of adjusting means have the advantage of permitting the height of the supporting frame 8 to be practically infinitely varied in relation to the carriage 9.

It is evident that the design of the universal mill herein disclosed offers considerable advantages, because through the adjustability of the pass line xx in relation to the transporting level y-y of the roller tables, scrap ends are obviated by the straight-line approach of the sections entering the mill rolls.

In accordance with the provisions of the patent statutes, we have explained the principle and operation of our invention and have illustrated and described what we consider to represent the best embodiment thereof. However, we desire to have it understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically illustrated and described.

We claim: 1. A universal rolling mill comprising:

4 a housing having a window;

a supporting frame constructed and arranged to be supported in said window by said housing;

' a pair of vertical'rolls and a pair of horizontal rolls arranged in a common vertical plane and supported between vertical walls of said supporting frame, at

' least said vertical rolls being supported by said frame; a carriage receiving said supporting frame and movable as a unit into and out of said window; and

means for adjusting the elevational height'of said supporting frame relative to said carriage.

2. A univarsal rolling mill according to claim 1 wherein said means for adjusting comprises:

rigid shims arranged between said supporting-frame and said carriage. 3. A universal rolling mill according to claim 1 wherein said means for adjusting comprises:

threaded spindles operatively arranged between said supporting frame and said carriage. 4. A universal rolling mill according to claim 1 wherein said means for adjusting comprises:

adjustable lwedges operatively arranged between said supporting frame and said carriage. 5. A universal rolling mill according to claim 1 wherein said adjusting means comprises:

piston cylinder assemblies operatively arranged between said supporting frame and said carriage.

References Cited UNITED STATES PATENTS RICHARD J. HERBST, Primary Examiner B. I. MUSTAIKIS, Assistant Examiner 

